Researchers manage to create a 20 kW wireless recharging device

Range anxiety. You must have heard about it  every time people speak about electric cars. One way to prevent that sort of concern would be an ongoing recharge process. In other words, imagine if you could recharge your car while driving it. This is what wireless recharging aims to do, but there was only a limited amount of energy the process could deliver to the car batteries. At least until ORNL (Oak Ridge National Laboratory) started its researches and managed to establish a 20 kW transfer with 95% of efficiency. Check the video below with one of the main researchers, Omer Onar.

The ORNL used a Toyota RAV4 EV in the process. With that amount of energy, it is finally possible to recharge the car on the go. The system is also considered very efficient for buses or trains, which can gather enough energy to reach the next stop and start the process all over again, for example. Another advantage is using smaller batteries or even no battery at all. They are the heaviest and most expensive component in electric vehicles. After a certain frequency of cycles (recharging and depleting), they need to be replaced and recycled, unless they are made of nanowires.


Now ORNL wants to create a wireless recharging system that can deliver 50 kW, what would put the process on a par with current plug-in quick chargers. We just hope they manage to place the receiving plates further up. Not for the sake of SUVs and their ground clearances, but for everyone that has to deal with poor road conditions. There is a huge chance one of these plates may be lost in a pot hole or in a gutter…

Gustavo Henrique Ruffo

I have been an automotive journalist since 1998 and have worked for many important Brazilian newspapers and magazines, such as the local edition of Car and Driver and Quatro Rodas, Brazilian's biggest car magazine. I have also worked for foreign websites, such as World Car Fans and won a few journalism prizes, among them three SAE Journalism Awards and the 2017 IAM RoadSmart Safety Award. I am the author of "The Traffic Cholesterol", a book about bad drivers that you can buy at Hotmart, Google Play, Amazon and Kobo.